Machine for heading pins with glass.



Patented Nov. 5, l90l.

E. SCHUMACHER.

MACHINE FOR HEADING PINS WITH GLASS.

(Application filed Aug. 2, 1901.;

(No Model.)

TM: nonms PETERS co, PHoTo-urum WASrgINGTON, o. c.

Nrrnn STATES ERIGI-I SOHUMACI-IER, OF AIX-LA-CHAPE LLE, GERMANY.

MACHINE FOR HEADING PINS WITH GLASS.

SPECIFICATION forming part of Letters Patent N o. 685,9l8, datedNovember 5, 1901.

Application filed August 2. 1901. Serial No. 70,621. (No model.)

To aZZ whom it may concern:

Be it known that I, Enron SOHUMAOHER, a citizen of Germany, and aresident of Aix-la- Ohapelle, Germany, have invented certain new anduseful Improvements in Machines for Heading Pins with Glass, of whichthe following is a specification.

This invention relates to a machine for pro viding the end of apin-shank with a glass bead, which constitutes the head. By my inventiona glass rod is fed toward the pinshank and its end is molten into a beadand automatically converted into a head, which is secured to such shank.

In the accompanying drawings, Figure 1 is a side elevation of myimproved machine, and Fig. 2 a front elevation thereof.

The letter (t represents the pin-wire or shank to be headed, which isrotated and fed forward, either gradually or intermittently, bymechanism not illustrated in the drawings and forming no part of thepresent invention.

To the machine-frame A is fulcrurned atz' a slidef, provided with atrough or groove 17 and with a conical nozzle e. Reciprocating andoscillating motion is imparted to the slide f by means of a crank g ofwork-shaft m, driven from gear m, so that the end h of the nozzle 6 willdescribe a figure, as indicated by dotted lines. The glass rod 0, placedin the groove 1), is grasped by a pair of spring-jaws d, arrangedopposite a notch formedin the slide f between the groove 6 and thenozzle e. The jaws d are secured to the upper end of a lever 70, whichis also driven from the crank g, so as to receive reciprocating andoscillating movement. The lever 7t is slotted to embrace a fulcrum Z,formed on a hand-lever Z. By setting this hand-lever up or down, andthus shifting the fulcrum Z, the play of lever 7c may be adjusted to adifferent feedstroke. The motion of lever his at the crankpin 9 equal tothat of slidef, while at the working faces of the jaws d it is greaterthan such slide in the same proportion as the length of line w is tothat of liney, Fig. 1. Before the work-shaft m is rotated the nozzle eis heated by electricity, a flame, or other source of heat n, so thatthe end of the glass rod, which is contained in the nozzle, is molten.While the crank-pin g moves in the direction of the curved arrowt theglass rod 0, held by the jaws (1, receives a greater motion in thedirection of the straight arrow it than does the slide f. By thisdifference in motion the glass rod isthus fed forward and through thenozzle, so that a corresponding quantity of the molten glass is squeezedthrough the nozzle. This liberated portion or drop 0 of molten glass isby the elliptical or circular movement of the nozzle formed into a head,which attaches itself to the end of the rotating pinwire a, and thusforms the head. While mov* ing forward the jaws (1 close upon the glassrod by their own elasticity; but on moving backward they are spread by aroller 19 or similar device, so as to liberate the rod. Upon the nextforward movement the jaws clear the roller 19 to again grasp and feedthe rod 0 in the manner previously described.

It will be seen that by adjusting the relative movement of'the slidefandlever is the size of the glass drop produced maybe regulated, so thatlarger or smaller heads may be formed.

The conical nozzle is designed to form regular and equal heads, while ifless regular heads are desired an open form of nozzle or delivery endmay be employed.

What I claim is- 1. In amachine forheading pins with glass, thecombination of a nozzle for delivering the glass with means for heatingsaid nozzle, substantially as specified.

2. In a machine for heading pins with glass, the combination of a nozzlewith means for feeding a glass rod through said nozzle, and means forheating said nozzle, substantially as specified.

3. In a machine for heading pins with glass, the combination of a nozzlewith means for imparting an oscillating movement to said nozzle, meansfor feeding a glass rod through said nozzle, and means for heating thenozzle, substantially as specified.

4. In a machine for heading pins with glass,

the combination of an oscillating nozzle with oscillating jaws :forfeeding a glass rod means for adjusting the feed-stroke of said 10 jaws,substantially as specified.

Signed by me at AiX-la-Ghapelle,Germany, this 23d day of July, 1901.

ERIOH SCHUMACHER.

3 Witnessesz H. ANOWLFLIEG, CARL BOLLMANN.

